Home / 128,105.62-192,275.04-68,184.40

Finding the Fourth Proportional to 128,105.62, 192,275.04 and 68,184.40

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Solution

The fourth proportional to 128,105.62, 192,275.04 and 68,184.40 is: 102,338.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,105.62 : 192,275.04 = 68,184.40 : x
  2. Step 2: Convert to fraction form
    128,105.62/192,275.04 = 68,184.40/x
  3. Step 3: Cross multiply
    128,105.62x = 192,275.04 × 68,184.40
  4. Step 4: Simplify right side
    128,105.62x = 13,110,158,530.13
  5. Step 5: Solve for x
    x = 13,110,158,530.13/128,105.62
  6. Step 6: Final answer
    x = 102,338.67

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.